🧮 Free tool
Dog Age Calculator
The old "multiply by 7" rule isn't accurate, dogs mature fast early on, and bigger dogs age more quickly. Enter your dog's age and size for a better estimate of their age in human years.
In human years, your dog is about
- years
Tip: life stage affects diet, exercise and health checks. Browse our vet guides for your dog →
An estimate only. Based on the widely used model where the first year ≈ 15 human years, the second year adds ≈ 9, and each later year adds 4-7 depending on size (bigger dogs age faster). Individual dogs vary, your vet can assess your dog's true life stage.
